Jon Lester, Max Scherzer and Giancarlo Stanton all signed their mega-contracts this offseason. Here's a look at the richest contracts in baseball history.

Signed to a $155 million, seven-year contract, Tanaka went 13-5 with a 2.77 ERA in 20 starts. The Yankees say he has been throwing as part of his normal conditioning program in Japan.

NOTES: Nova might throw off a mound this week for the first time since elbow ligament-replacement surgery and appears on track to rejoin the team by June. He tore a ligament in his right elbow last April 19 during a game against Tampa Bay and had surgery 10 days later.